Aviation Dictionary

Instrument flight rules (IFR)

Rules that govern the procedure for conducting flight in weather conditions below VFR weather minimums. The term “IFR” also is used to define weather conditions and the type of flight plan under which an aircraft is ope…

Dictionary Term

Instrument flight rules (IFR)

Definition

Rules that govern the procedure for conducting flight in weather conditions below VFR weather minimums. The term “IFR” also is used to define weather conditions and the type of flight plan under which an aircraft is operating.

References

Airplane Flying Handbook · Federal Aviation Administration · 2021